Lock.



r No. 709,018. Patented Sept. I6, I9'2'.

` C. KUNZELMANN. l 1

L 0 C K (Application led Mar. 5, 1900.)

(No Model.) 4 Sheets-Sheet'l.

mi Nmlws PETERS cc. vamo-Umm wgsuwonm D. c.

Nb. 709.11m.

(No Model.)

Patented Sept. I6. |902. C.r KUNZELMANN.

LOCK.

(Application led Mar. 5, 1900.)

4- Sheets-Sheet 21..

TN: cams versus co. mgm-umn. wAsHmmou u c No. 709,0l8. Paiented Sept. I6, |902.

C. KUNZELMANN.

LOCK.

(Application-med Mar. 5, 1900.) l (No Model.) 4 Sheets-Sheet 3.

T E Nonms Psfzns co, PHOTDMTNQ.. WASHINGTON. D. c,

No. 709,0ls. l "Patented sept. la, |902.

c. KuNzELmANN.

L D C K (Application filed Mar. 5, 1900.

ma Model.)

4 Sheets-Sheet 4,

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UNITED STATES ATENT FFICFE.

CARL KUNZELMANN, OF SCKINGEN, GERMANY.

LOCK.

SPECIFICATION forming part of Letters Patent No. 709,018, dated September 16, 1902. Application filed March 5, 1900. Serial No. 7,361. (No model.)

To a/ZZ whom t may concern.-

Be it known that I, CARL KUNZELMANma subject of the Grand Duke of Baden, residing at Sckingen, in the Grand Duchy of Baden, Germany, have invented certain new and useful Improvements in Safety-Locks, (for which I have applied for patents in England, dated December 30, 1899; in Germany, dated September 30, 1899; in France, dated December 30, 1899; in Belgium, dated December 30, 1899; in Spain, dated January 5, 1900; in Austria, dated December 27, 1899; in Hungary, dated January 4, 1900; in Sweden, dated December 30, 1899; in Norway, dated December 30, 1899; in Denmark, dated December 30, 1899, and in Switzerland, dated December 30, 1899,) of which the following is a specication.

This invention relates to a safety-lock designed especially for safes, strong rooms, and

similar purposes, and has the advantage that the receptacle or room is locked by a bolt operated by a key and by a bolt operated by a door-handle, the key having pressing-pins operatin g safety devices. The keyhole situated in the wall of the door and in the casing of the lock is closed and can only be set free by the door-handle after the safety devices `of the latter have been arranged according to a chosen Word or combination of letters.

In order that this invention may be the better understood, I now proceed to describe the v same, reference being had to the accompanying drawings and to the letters and figures marked thereon. Figure 1 shows a lock taken from the door, with the casing protecting the keyhole in section. Fig. 2 shows a section through the lock on the line a a, Fig. 1, with the handleand safety devices of the latter. Fig. 3 shows the interior of the lock when the covering-plate has been removed, the bolt being in locking` position and the safety devices of the latter in position. Fig. 4 shows a similar view of the lock with the locking-bolt in unlocked position. Fig. 5 shows the safety mechanism of the handle situated on the outside of the door, partly in` section. Fig. 6 shows the keyhole in the cover of lock-casing closed,

the devices being partly shown in section.

Fig. 7 shows a sectional View on the line Z9 b, Fig. (i. Fig. 8 is a part-sectional View on the line b Z9, Fig. 2, of the bolt mechanism operated by the handle and seen from below. Fig. 9 shows a part-sectional view of the locked safety device of both main bolts as operated by a pressing-pin ofthe key. Fig. 10 is a similar view of these devices unlocked. Fig. 11 is a sectional view of the line d d, Fig. 10. Fig. 12 shows a longitudinal section of the key, and Fig. 13 shows a modification of the arrangement for closing the keyhole.

On the inner side of the door l of the safe or strong room is arranged a lock-casing 2 of known construction in such a manner that a handle 3, adapted to turn and situated outside the door, may engage and be secured therein. Outsidethedoorisarrangedasafety mechanism as used in Bramah locks, consisting of plates adapted to be adjusted according to a chosen word or combination of letters, so that when the mechanism has been arranged in accordance therewith the handle 3 may be turned and the keyhole in the door 1 set free. The safety device consists of a sleeve 4, screwed to the outside of the door and provided with a flange 5, which serves as guide and bearing to the shaft of the handle. Rings 6 are slid over the handle 4 and rest on the ange 5. rIhe inner edges of the rings 6 have recesses 7, of which one, 8, is deeper than the others. A pin 9` is arranged on the outside of these rings and en` gages in recesses of disks 11, surrounding the rings 6. Theonter edges of the rings 6 have recesses and letters marked on the material around the Whole periphery, so that by suitable adjustment of the rings to a chosen word or combination the large recesses 8 of the rings b' can be placed in line. In the sleeve 4 and the flange 5 thereof a bolt 12 is adapted to move, which carries at a right angle to its longitudinal axis a flat bar 13, adapted to engage in the large recess 8 of the rings 6 when such are placed in line in order to allow of the free movement of the handle for opening the keyholes; otherwise the bar 13 engages in a longitudinal groove 14 of the shaft 16 of the handle 3, thus preventing the turning of the latter. A disk 15 covers and holds these rings or disks and 11. The intermediate space formed by the disk 15 and the ring G (because the disks 11, which are close to each ICO other and engage with each other by pieces 16, are of increased thickness) is lled bya disk 17. The rotary handle 3 is held in the lock by a bolt 19, adapted to move in the flange 5 of the sleeve 4 and engaging in the circular groove 18 of the shaft; 16 of the rotary handle. The bolt 19 is secured in its position to a certain extent by a spring or other device. The end of the shaft 16 of the rotary handle 3 has semicircular recesses 20 in its longitudinal direction, which are designed for engaging with a device for operating the bolt.

vThe keyhole in the door 1 is closed by a closing device 2l, having a shaft 22, the section of which corresponds to the shape of the keyhole and which engages in a tube or sleeve 23 of the piece 24, which closes the keyhole. The closing device 21 has a spiral spring 25, arranged in the shaft 22, such spring finding a resistance on t-he closing-plate 24, which is adapted to cause the closing device 21 to pass automatically through the key-guide orifice after the disengagement of the bolt 26, the operative end of which enters into the recess 27 of the shaft 22. The bolt 26 is operated by a lever 29, which pivots at o and is under the infiuence of a cam 30, fixed to a sleeve 31, arranged on the shaft 16 of the rotary handle. This sleeve receives the free end of the shaft 16 of the rotary handle and is guided in a casing 32, which holds the devices for moving the bolt operated by the rotary handle.

In a similar manner in which the closing device 21, Fig. 2, can be actuated through the handle after closing the keyhole a conically-ground closing device 21, shaped according to thekeyhole, can be operated by a sepa- ,rately-arranged rotary handle 31. (See Fig. 13.) For this purpose a piece 26 is provided on the inner end of the handle-axle, the free end of such piece 26 engaging in a recess 27 of the closing-piece 21. Therefore when the free end of the arm 26 is turned out of the recess 27 of the device 21 the latter will also automatically leave the keyhole. When the orifice of the key-guide has thus been set free in the door-hole, the key can be inserted into the casing 23 for operating the closingplate 24 and opening the lock-casing 2. The casing 23 is screwed to the covering-plate 28 of the lock-casing and is provided invits interior with a rotary piece to receive the Ahit of the key and to which is pivoted the bolt 26. In order that the latter shall leave automatically the recess 27 of the shaft 22A when the lever 29 has been withdrawn, a spring 34 is attached to the rotary piece 33, which operates the bolt 26 in the direction of the arrow35. 'lhe keyhole-orifice of the rotary piece 33 corresponds with that of the casing 23, and this operation is rendered precise by a piu 37, carried by a spring 36, fixed to the rotary piece 33, engaging in a recess The round shape of the pressure-pin 37 and of the recess 38 permits of easy disengagement. Vhen now the key is inserted into the casing 23 or its rotary piece 33, respectively, the latter can be easily turned, the bit of the key being Within the rotary piece 33. The casing-plate 24 may then be operated by the pressure-pin A of the key. The plate 24, covering the keyhole 39 of the lock-casing 2, is guided in the casing 23 and slides on the covering-plate 28 of the lock-casing 2. It has also an orifice 40 for the passage of the bit of the key, which must be adjusted by the key for the latter to enter the casing, so that such orifice corresponds with the orifice 39 of the back casing. For this purpose it is necessary after the insertion of the key to depress a spring 41, fixed l to the plate 28, Fig. 6, by means of the pin protruding from the bit of the key, a projection 42 of such spring 41 engaging in an orifice of the plate 24. When by depressing the spring 41 the project-ion 42 has been removed from the orifice of the plate 24, the plate 24 may be moved in the direction of the arrow 44 by the rotation of the key and engagement of the pressure-pin A of the key in the orifice 43 of the plate 24. During this operation a pin 45 of the plate 24, which engages in the lock-casing 2, slides along a fiat piece 47, which forms an oblique plane and is fixed to a spring 46, arranged in the casing. When the plate 24 has arrived in its final position and the keyhole 46 thereof is over the orifice 39 of the casing 2, the pressure-pin 45, sliding with its free end on the upper side of the dat piece 47, has arrived at the end of the latter, and therefore springs off the piece 47 under the action of the pin 45, so that the plate 24 cannot go back. Then the key may be introduced into the real lock-casing 2. As soon as the key is drawn back from the casing and the spring 46 has been pressed down by means of a pressure-pin B, situated in the tube of the key, the plate 24 springs'back into its former position under the action of a spring 48, bearing against the pin 45 of the plate 24.

The mechanism is now in position for the locking or unlocking of the lock itself-7}. e., for the operation of the two main bolts. For this purpose the devices which secure the bolts in their positions must of course be operated first. As before mentioned, the two bolts of the lock must be operated separately. The bolt 50, adapted to move in a horizontal line, is operated first by the key. The other bolt 51, which moves vertically, is operated by the rotary handle. The bolt 51 consists of two pieces sliding on each other, which when operated diverge or converge relatively to their longitudinal axes. The bolt 50 consists of a fiat piece of suitable shape. The edge thereof on which the bit of the key engages has recesses, so that contact-faces 52 in 53 and 54 are formed, of which the latter is a shaped piece 54, situated in the main bolt and adapted to turn. This shaped piece 54 is rotated out of the reach of the bit of the key at the final IOO IIO

position for locking in the direction of the arrow 55, Fig. 4, so that it occupies the position shown in Fig. 3. The piece 54 is held in this position by va projection 56, provided on a spring 57, attached to the bolt 50. To insure the return of the piece 54 into the position Fig. 4 automatically after pushing back the spring 57 by means of the pin A, projected from the bit of the key, a spring 58, also xed to the bolt 50, is provided, the free end of which engages over the piece 54 and holds the same on. the plate 59 fixed to this bolt 50 after the lug 56 has set free the piece 54. Five safety-plates 49 are arranged on the bolt 50 on a pin 60, fixed to the wall of the casing 2. These plates 49 are adapted to rotate and are lifted at the movement of thekey, so that a pin 6l, fixed to the bolt 50 and situated in longitudinal slots of the plates, passes into a side branch 62 of the longitudinal slot of the plates 49 after the operation of the key.` The plates 49 are operated for this purpose by necessary to press on the spring 7l by means springs 63, resting against the wall of the casing 2. The securing device of the plates 49 has to be disengaged before the bolt 50 can be moved. This securing device consists of an angular lever 64, the bent part 65 of which carries a projection 66 at itsend, which engages in a recess 67 of the plates 49. 69, provided on a pin 68, influences the lever 64, and a plate 70, serving as support for the lever 64, is provided with a spring 7l, which secures the lever 64 in the dierent positions. The plate 70 is screwed to the wall of the casing and carries,by means of a plate 72, screwed to it, a pin 73 for guiding the key, which engages with a plate 74, screwed into the plate 70. The edge of the plate 74 is beveled, so that itis held on the plate 70 by the plate 72. The pin 73 is hollow and carries `in the hollow a pin 75, actuated by the pin B, situated in the hollow shaft of the key, in order to press the spring 46 downward in the casing of the lock. With the pin 73 and the plate 74, respectively, is connected a piece 76,` which when turned operates a latch-like safety device 85, screwed also on the plate 70. The safety device is returned automatically into locked position by a spring 86. This safety device 85 is designed for the bolts 51I and engages into a recess 87 thereof. The plate 74 has an orifice 77, through which can pass the pin A, projected from'` the bit of the key, so as to move the levers 64 ofthe devices 65 66 in the direction of the arrow 78, Fig. 9, to disengage the device 65 66 until the mechanism comes into the position shown in Fig. l0. Then the spring 71, previously pressed back, comes forward, so that the edge 79 of thelever 64 rests against the edge of the spring 71. If the safety device is to be returned into the position shown in Fig. 9, it is only of the pin A, adapted to pass through the orifice 77 of the plate, so that the edge 79 of the lever 64 is set free. The lever 64 then goes back in the direction of the arrow 8O until the A spring edge 81 of the said lever 64 rests against the recessed part 82 of the spring 71. When the device 65 is disengaged and it is desired to lock the bolt, it is only necessary to press on the pin 7 5 in the key-guide pin by means of the pin B, whereby the spring 46 is pressed downward and disengages a pin 83, fixed to the bolt 50, from the spring 46. The pin 83 engages in either final position into holes 84 of the spring 46. The bolt 50 may now be brought into locking position (shown in Fig. 3) by turning the key twice. For the withdrawal of the bolt 50 the piece 54, turned back during-the locking of the bolt 50, is brought back into position ready for action by pressure on the spring 57, exerted by the pin A. The pin 83 of the bolt is then disengaged by depressing the spring. The bolt can then be drawn back by the key. To the bolt 50 is further hinged a lever 88 of suitable shape, the end 89 of which is operated by the bit of the key and influences the catchepiece 90. The end 89 of the lever 88 is situated in a recess on the edge of the bolt. The bolt 51 consists of two pieces and moves vertically, as before nientioned. Its projecting end is guided in a casing 32 or its flange 92, respectively, secured to the side of the casing 2. The casing 32 has recesses, in which slide the bolt 50 and the piece 90. The case 32 is provided with a sleeve 31,

having anges 93 and 94, in which engages the shaft 16 ofthe handle 3. By pins in the hollow of the sleeve and in recess 20 of the shaft 16 of the handle 3 the sleeve 31 and flanges 93 and 94 are turned when the handle 3 is rotated. The ange 93 forms a closing bottom of the sleeve 31, and it is provided with two pins, which when rotated engage in the recess 96 of the bolt 51. The recesses on the parts of the bolt 51 which cover each otherin this position are such, Fig. 8, that when the handle 3 and sleeve 31 are rotated the pins 95 engage in the recesses 96 of the bolt 51. The recesses 96 it over each other in such a manner that the recesses 96 of one piece end where the recesses of the other pieces commence, and that the recesses of the ends are at the right and then at the left, so that when the sleeve 31 and pin 95 are turned the parts ofthe bolt move so as to diverge or converge relatively to their longitudinal axes. Therefore when the pin 95 is rotated in the direction of the arrow 97 the engagement of the left-hand pin95 with the lower part of the bolt 51 and the engagement of the righthand pin 95 in the upper part of the bolt 51 will movethe parts of the bolt in the direction of the arrow 98. The part of the sleeve 31 situated between the flanges 93 and 94 is flattened at two places in order to allow of the passage of the piece 90 and parts belonging thereto. Between this flattened place,but between the two collars, is provided a projection 100, which when the sleeve 31 is rotated engages behind the movable piece 99\(or'its screw of the catch-piece 90, so that the latter can be withdrawn by the rotation of IOC IIO

Igo

the handle 3. The piece 99 is operated by the key,the bit of which rests against the end 89 of the lever 88 and turns the same in the direction of the arrow 101. The pin 102, providedon the other end of the lever 88, turns the piece 99, adapted to rotate in the piece 90, in the direction of the arrow 103, so that the projection 100 withdraws the piece 90 in the direction of the arrow 104 when the sleeve 3l is turned. The piece 99 has a screw 105 at its free end, which serves as a Stop to the projection 100. A spiral spring 107, provided on a pin 106 of the piece 90 and which bears against the angle-piece 106,forces the piece 90 to go back into locking position immediately when the handle 3 is set free. A pin 109, screwed into the piece 90, limits the throw of the piece 90 by striking against the casing 32. The pins A and B, provided, respectively, in the hollow shaft and bit of the key, are operated by collars C and D, provided on the shaft and handle of the key, and subjected to spring-pressure.

The operation of the lock is as follows: For locking the lock it is first necessary in order to introduce the key to remove the devices closing the orifices for the insertion of the key. The first device 21, which closes the keyhole in the wall of the door, is removed by turning the handle 3, and thus causing by the eccentric 30 and lever 29 the bolt 26 to be set free, so that the device 21 leaves the recess 27 of the shaft 22 under the action of theI spring 34. Before the handle 3 or its equivalent can be operated it is necessary to adjust the plates 11 to the word or combination of letters, so that the flat bar of the bolt 12 can enter all large recesses 8 of the disks 6 and leave the longitudinal groove 14 of the shaft 16. The key is now inserted i-nto the casing 23 and turned into such a position that the pin A, projected from the key-bit, enters the hole 43 of the closing-plate 24 and presses downward the projection 42 of the spring 41.

When the key is now further rotated, the

pin A being held in the same position, the plate 24 is moved in the direction of the arrow 44 until the keyhole 40 of the closingplate 24 corresponds with the keyhole 39 of the closing-plate 28 of the lock-casing 2. The closing-plate is held in this position by a pin 45 entering the lock-casing 2, the end of the casing being placed behind the hat piece 47. Now when the key has been turned once in the casing 23 it is pushed into the lock-casing 2, the hollow shaft of the key sliding over the pin 73, and the pin B in the keyis pressed against the pin 75 in the hollow pin 73, so that the spring 46 is pressed against the wall 2 of the casingand the operation of the bolt 50 is not prevented by the pin 83, the latter being disengaged by the before-mentioned operation from the holes 84 of the spring. The bolt 50 can now be brought into locking position by turning the key twice, the plates 49 being lifted. When the bolt 50 has arrived in its locking position, Fig. 3, the piece 54 is brought into the position shown in Fig. 3 by turning the key again. By turning the handle 3 in the direction of the arrow 110, Fig. 2, the bolt 51-is also brought into locking position: and its safety deviceis placed in position by the pin A, projected from the bit of the key. First the orifice 77 in the plate 74 is sought by the pin A and the spring 71 is pressed, whereby the projection 66 of the lever 64 65 enters the recess 67 of the corresponding plates under the action of the spring 69. The pin A is now slightly released, so that only the disk 74 is rotated, the arm 76 causing the safety device 85 to enter the recess 87 of the bolt 51. Thus the lock is locked and all safety devices secured in position, the operation of the catch-piece being also prevented. When it is now desired to open the lock, the safety devices are disengaged, pressing the pin A by rotating the plate 74 and the arm 76, turning the device 85 around its pivot and removing it from the recess 87 of the bolt 51, then turning the key, and depressing the pin A farther, so as to move the arm 64 and projection 66 in the direction of the arrow 78 until the edge 79 engages with the corresponding edge of the spring 71 and retains the lever 64 65 in this position. Then the disk is turned to the other side, and by the pressure of the pin A on the spring 57 the piece 54 on the main bolt 50 is disengaged and the piece 54 is againsubjected to the action of its spring 58 by the'return ofthe projection 56 through the depression of the spring 57. Now by the pressure of the pin B and pin 75 in the hollow pin 73 on the spring 46 the main bolt may be withdrawn by the rotation of the key. The withdrawal of the bolt 51 is rendered possible at the same time, and it is onlynecessary to press with the bit of the key on the end 89 of the lever 88 to cause simultaneously with the removenlent of the piece 99 of the latch 90in the direction of the arrow 104 the projection 100 of the sleeve 31, situated on the shaft 16 of the handle 3,to engage with the pin 105, and thus to withdraw the latch 90 in the direction of the arrow 14, the handle 3 being rotated to the right. The door can then be opened. When there the key is withdrawn the closing -plate 24 returns into its previous position under the action of its spring 48 and preceding pressure on the spring 46, and it is then only necessary to place the device 21 into the hole of the door and to press the bolt 26 into the recess 27 of the shaft of the devicer 2l by the movement of the piece 30 and the lever 29 through the handle 3.

What I claim, and desire to secure by Letters Patent of the United States, is-

In a lock having outerand inner casings or chambers, the combination of a main bolt adapted to be actuated by a key, an auxiliary bolt or bolts, a rotating handle for actuating said auxiliary bolts, means whereby said handle may be locked and unlocked against rotation, a plug for closing the'keyhole or en- TOO IIO

trance to the outer easngof the look, devices controlled by the rotation of said handle for releasingsaid plug, amova'ble barriellooated behind said plug and adapted to oppose the entrance of a key to Said inner chamber,

`means controlled by the key for removing said barrier, and means located behind said barrier and also controlled by the keywhere- I 

